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Open access

Mostafa Shahein, Thiago Albonette-Felicio, Giuliano Silveira-Bertazzo, Rafael Martinez-Perez, Marcus Zachariah, Ricardo L. Carrau, and Daniel M. Prevedello

Chordomas are rare tumors that occur at an incidence rate of 0.8 per 100,000. Thirty-five percent of chordomas occur in the spheno-occipital region. We present a case of a clival chordoma that had severe brainstem compression. The patient had a 1-year history of slurred speech and left facial weakness (House-Brackmann 3). The endoscopic endonasal transclival approach gave a panoramic view of the region without the necessity of brain retraction or manipulation of the surrounding cranial nerves. Gross-total resection was achieved and no CSF leak was encountered postoperatively. The left facial weakness improved to House-Brackmann 1.

The video can be found here: https://youtu.be/DzW9Q6ckTHw.

Open access

Rafael Martínez-Pérez, Marcus Zachariah, Ruychen Li, Giuliano Silveira-Bertazzo, Ricardo L. Carrau, and Daniel M. Prevedello

Atypical trigeminal schwannomas (ATSs) are notorious for their ability to invade the skull base. An expanded endoscopic endonasal approach (eEEA) provides direct access to the tumor with no need for cerebral retraction or manipulation of neurovascular structures. Herein, we present a case of a large temporal fossa extradural lesion with secondary invasion of the sella, clivus, and temporal and infratemporal fossae in a 49-year-old male with severe vision loss. A transpterygoid transmaxillary approach was performed. Gross-total removal was achieved and pathology revealed the diagnosis of ATS. Visual function fully recovered in the right side and the patient has been uneventfully followed since surgery.

The video can be found here: https://youtu.be/6pSwdYsN9hk.